IMC Chicago Portfolio holdings
IMC-Chicago, a key arm of IMC Trading founded in 1989 by Rob Defares and René Schelvis in Amsterdam, is a proprietary trading firm and market maker headquartered in Chicago since opening its first overseas office there in 2000. Employing over 650 of IMC’s 1,600+ global workforce, it operates at the heart of North America’s financial hub, trading equities, options, futures, and other derivatives on major exchanges like the Chicago Mercantile Exchange (CME) and Chicago Board Options Exchange (CBOE). Known for its technology-driven approach, IMC-Chicago leverages advanced algorithms and low-latency systems to provide liquidity across more than 100 global venues, evolving from a trading outfit with strong tech to a tech company that trades. Under CEO Rob Defares, the firm emphasizes innovation, quantitative strategies, and a collaborative culture, making it a powerhouse in the U.S. derivatives market.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$568M |
| 2 |
Amazon
AMZN
|
+$341M |
| 3 |
iShares MSCI South Korea ETF
EWY
|
+$278M |
| 4 |
Apple
AAPL
|
+$239M |
| 5 |
TSMC
TSM
|
+$215M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$316M |
| 2 |
Tesla
TSLA
|
+$253M |
| 3 |
Micron Technology
MU
|
+$178M |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$176M |
| 5 |
Sandisk
SNDK
|
+$159M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.94% |
| 2 | Technology | 0.92% |
| 3 | Consumer Discretionary | 0.31% |
| 4 | Financials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
4476
MBIA
MBI
$223M
| $577K | ﹤0.01% |
88,511
+1,517
| +2% | +$9.14K |
2025 Q3
3 quarters
|
|
4477
PUT
Intrepid Potash
IPI
$436M
| $577K | ﹤0.01% |
17,600
-2,100
| -11% | -$79.9K |
2026 Q1
1 quarter
|
|
4478
Flowserve
FLS
$8.95B
| $577K | ﹤0.01% |
+7,775
| New | +$591K |
2026 Q2
0 quarters
|
|
4479
iShares US Aerospace & Defense ETF
ITA
$12.1B
| $576K | ﹤0.01% |
2,378
-472
| -17% | -$107K |
2026 Q1
1 quarter
|
|
4480
PUT
Lear
LEA
$5.92B
| $576K | ﹤0.01% |
4,300
-1,600
| -27% | -$214K |
2026 Q1
1 quarter
|
|
4481
CALL
ARK Blockchain & Fintech Innovation ETF
ARKF
$875M
| $576K | ﹤0.01% |
14,600
-11,600
| -44% | -$472K |
2021 Q1
21 quarters
|
|
4482
CALL
Trex
TREX
$4.64B
| $575K | ﹤0.01% |
11,500
-20,000
| -63% | -$830K |
2025 Q3
3 quarters
|
|
4483
Corsair Gaming
CRSR
$1.39B
| $575K | ﹤0.01% |
59,493
+32,664
| +122% | +$253K |
2026 Q1
1 quarter
|
|
4484
PUT
Ameresco
AMRC
$1.04B
| $574K | ﹤0.01% |
+20,800
| New | +$601K |
2026 Q2
0 quarters
|
|
4485
PUT
Compass Diversified
CODI
$767M
| $574K | ﹤0.01% |
53,800
-15,400
| -22% | -$168K |
2025 Q4
2 quarters
|
|
4486
PUT
Enovis
ENOV
$1.12B
| $573K | ﹤0.01% |
+27,700
| New | +$653K |
2026 Q2
0 quarters
|
|
4487
PUT
Lennox International
LII
$12.4B
| $573K | ﹤0.01% |
1,000
-3,900
| -80% | -$1.99M |
2026 Q1
1 quarter
|
|
4488
CALL
Camden Property Trust
CPT
$11.4B
| $572K | ﹤0.01% |
5,000
-2,400
| -32% | -$256K |
2026 Q1
1 quarter
|
|
4489
PUT
Atlas Energy Solutions
AESI
$1.24B
| $571K | ﹤0.01% |
34,400
+19,200
| +126% | +$314K |
2026 Q1
1 quarter
|
|
4490
Invesco S&P 500 Top 50 ETF
XLG
$11.6B
| $571K | ﹤0.01% |
9,327
+3,326
| +55% | +$203K |
2026 Q1
1 quarter
|
|
4491
CALL
XPEL
XPEL
$1.2B
| $570K | ﹤0.01% |
11,500
+6,700
| +140% | +$305K |
2026 Q1
1 quarter
|
|
4492
PUT
Bitwise Bitcoin ETF
BITB
$3.01B
| $570K | ﹤0.01% |
17,900
-9,000
| -33% | -$351K |
2025 Q4
2 quarters
|
|
4493
CALL
DELISTED
Defiance Leveraged Long + Income SMCI ETF
SMCC
| $570K | ﹤0.01% |
120,100
+83,100
| +225% | +$394K |
2026 Q1
1 quarter
|
|
4494
Barclays
BCS
$76B
| $569K | ﹤0.01% |
21,197
-42,489
| -67% | -$1.02M |
2025 Q4
2 quarters
|
|
4495
Post Holdings
POST
$3.56B
| $568K | ﹤0.01% |
+6,434
| New | +$627K |
2026 Q2
0 quarters
|
|
4496
CALL
Veralto
VLTO
$24.5B
| $568K | ﹤0.01% |
6,400
+2,300
| +56% | +$200K |
2026 Q1
1 quarter
|
|
4497
PUT
DELISTED
TopBuild
BLD
| $567K | ﹤0.01% |
1,600
-700
| -30% | -$289K |
2026 Q1
1 quarter
|
|
4498
Dynex Capital
DX
$2.71B
| $567K | ﹤0.01% |
43,258
-22,134
| -34% | -$291K |
2025 Q3
3 quarters
|
|
4499
PUT
Corpay
CPAY
$26B
| $567K | ﹤0.01% |
+1,700
| New | +$565K |
2026 Q2
0 quarters
|
|
4500
CALL
Monro
MNRO
$428M
| $565K | ﹤0.01% |
+33,000
| New | +$540K |
2026 Q2
0 quarters
|
|
Similar funds
IMC Chicago's Q2 2026 Portfolio in Review
As of Q2 2026, IMC Chicago held 6,955 positions worth $419B, up 50% from $278B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
IMC Chicago's Q2 2026 filing shows 1,282 new, 3,251 increased, 1,751 reduced and 653 closed positions. Its largest new stake was Microsoft: 303,034 shares worth $113M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $316M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- IMC Chicago's largest Q2 2026 buy was Microsoft: 303,034 shares worth $113M.
- IMC Chicago added most to State Street SPDR Dow Jones Industrial Average ETF Trust in Q2 2026, an estimated $568M increase.
- IMC Chicago's biggest Q2 2026 reduction was Tesla, cutting an estimated $253M.
- IMC Chicago fully exited State Street SPDR S&P 500 ETF Trust in Q2 2026, selling an estimated $316M.
- IMC Chicago's ten largest holdings make up 34% of its $419B portfolio in Q2 2026.
- IMC Chicago opened 1,282 new positions and closed 653 in Q2 2026.
- IMC Chicago's portfolio value rose 50% quarter-over-quarter to $419B.
Based on IMC Chicago's 13F filing for Q2 2026, filed 6 Aug 2026.